Electric probe diagnostics of DC arc stream-argon plasma jet in atmospheric pressure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00472963" target="_blank" >RIV/61389021:_____/16:00472963 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Electric probe diagnostics of DC arc stream-argon plasma jet in atmospheric pressure

Popis výsledku v původním jazyce

Summary form only given. Thermal plasma jet generated by the torch WSPH 500 with water/argon stabilized arc was investigated. Thermal plasma jets generated in DC arc torches have been used in a number of plasma processing technologies like plasma cutting, spraying, waste treatment and gasification of organics. Electric probes was used for diagnostics of the jet in the region downstream of the torch exit1. Plasma jet was studied under different operating conditions of the plasma torch. Free plasma jet downstream of the plasma torch exit has potential which is determined by voltage drop on the plasma jet attachment to the anode. The fact that surrounding region around the plasma jet is electrically conductive even in large distances from the torch exit nozzle has been determined. Electron currents can flow to the earthed substrate at plasma processing applications and can influence plasma processing result. The conductivity of surrounding of plasma jet is caused by a presence of small plasma structures with temperature substantially higher than average temperature at these positions2. These plasma structures were ejected from the plasma jet boundary and remained even in huge distances from the torch.

Název v anglickém jazyce

Electric probe diagnostics of DC arc stream-argon plasma jet in atmospheric pressure

Popis výsledku anglicky

Summary form only given. Thermal plasma jet generated by the torch WSPH 500 with water/argon stabilized arc was investigated. Thermal plasma jets generated in DC arc torches have been used in a number of plasma processing technologies like plasma cutting, spraying, waste treatment and gasification of organics. Electric probes was used for diagnostics of the jet in the region downstream of the torch exit1. Plasma jet was studied under different operating conditions of the plasma torch. Free plasma jet downstream of the plasma torch exit has potential which is determined by voltage drop on the plasma jet attachment to the anode. The fact that surrounding region around the plasma jet is electrically conductive even in large distances from the torch exit nozzle has been determined. Electron currents can flow to the earthed substrate at plasma processing applications and can influence plasma processing result. The conductivity of surrounding of plasma jet is caused by a presence of small plasma structures with temperature substantially higher than average temperature at these positions2. These plasma structures were ejected from the plasma jet boundary and remained even in huge distances from the torch.

Druh

O - Ostatní výsledky

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů